But the real question is (if your profile is up to date) why you're trying to go over 18 psi when you don't have any safe way of knowing the oxygen/fuel ratio. And you're using a jwt chip. And "Will produce ~430RWHP on pump fuel and can produce ~500RWHP on race fuel with proper tuning and other appropriate modifications. These turbos spool up quickly and are capable of another 100 rwhp over the stock units". Which means that you're going to be producing more heat than flow over ~18 psi (if memory and comparison serves me right). I'm gonna guess and say you didn't dyno tune at Z1, right?
